Fri, 20 Nov 2009
14:30
14:30
DH 3rd floor SR
Devil in the detail: imaging sub-glacial landforms using high-resolution radar surveys of the Antarctic ice sheet
Dr. Ed King
(Cambridge)
We give a three dimensional generalization of the classical McKay correspondence construction by Gonzales-Sprinberg and Verdier. This boils down to computing for the Bridgeland-King-Reid derived category equivalence the images of twists of the point sheaf at the origin of C^3 by irreducible representations of G. For abelian G the answer turns out to be closely linked to a piece of toric combinatorics known as Reid's recipe.